581978305086 has 16 divisors (see below), whose sum is σ = 1168069534464. Its totient is φ = 193307280984.

The previous prime is 581978305067. The next prime is 581978305141. The reversal of 581978305086 is 680503879185.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171370006 + ... + 171373401.

It is an arithmetic number, because the mean of its divisors is an integer number (73004345904).

Almost surely, 2^581978305086 is an apocalyptic number.

581978305086 is an abundant number, since it is smaller than the sum of its proper divisors (586091229378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

581978305086 is a wasteful number, since it uses less digits than its factorization.

581978305086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342743695.

The product of its (nonzero) digits is 14515200, while the sum is 60.

The spelling of 581978305086 in words is "five hundred eighty-one billion, nine hundred seventy-eight million, three hundred five thousand, eighty-six".